7.8
CVE-2017-18078
- EPSS 1.09%
- Veröffentlicht 29.01.2018 05:29:00
- Zuletzt bearbeitet 21.11.2024 03:19:18
- Quelle cve@mitre.org
- CVE-Watchlists
- Unerledigt
Loginsystemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/passwd file.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Systemd Project ≫ Systemd Version < 237
Debian ≫ Debian Linux Version8.0
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 1.09% | 0.609 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 7.8 | 1.8 | 5.9 |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
|
| nvd@nist.gov | 4.6 | 3.9 | 6.4 |
AV:L/AC:L/Au:N/C:P/I:P/A:P
|
CWE-59 Improper Link Resolution Before File Access ('Link Following')
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
http://lists.opensuse.org/opensuse-updates/2018-02/msg00109.html
http://packetstormsecurity.com/files/146184/systemd-Local-Privilege-Escalation.html
http://www.openwall.com/lists/oss-security/2018/01/29/3
https://github.com/systemd/systemd/issues/7736
https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html
https://www.exploit-db.com/exploits/43935/
https://www.openwall.com/lists/oss-security/2018/01/29/4